Method of thermotechnical uniformity coefficient evaluation by analyzing thermograms

Abstract

One of the primary problems solved for increasing energy efficiency of a building is increasing of the insulating properties of the building envelope. The paper describes the method for determining the coefficient of thermotechnical uniformity by analyzing a thermogram of parts of a building envelope. The method is based on obtaining temperature distribution matrix on the surface of a building envelope fragment by thermography. Two methods for assessing the coefficient of thermotechnical uniformity are proposed. One method for determining the coefficient of thermotechnical uniformity is based on obtaining mean temperature values by numerically processing thermograms, another on numerical integration along the contour lines of temperature curves.Аннотация. Одной из приоритетных задач, решаемой при повышении энергетической эффективности зданий, является повышение теплозащитных свойств их наружных ограждающих конструкций. В данной работе изложен метод оценки величины коэффициента теплотехнической однородности из анализа термограмм наружных ограждающих частей зданий. Метод основан на получении путем термографирования матрицы распределения температуры на поверхности фрагмента ограждающей конструкции. Предложены два способа оценки величины коэффициента теплотехнической однородности. Один способ оценки величины коэффициента теплотехнической однородности основан на получении усредненных значениях температур путем числовой обработки термограмм, другой -на численном интегрировании вдоль контуров линий температурных кривых.

Adaptive control of housing and utilities infrastructure objects

“…In [4] one can find a way of adaptive control according to precedents, in compliance with which there are composed state classes of the controlled objects with the known reaction of every class object. Pursuing the objective after a finite number of controlling actions is reached by means of use of information about similar controlled objects behavior.…”

“…The existing mathematical models [1][2][3][4] give possibility to estimate the discounted payback period of investments for reducing energy consumption of housing and utilities infrastructure objects. This estimation may include different approaches for improving an energy performance of buildings as geothermal heat pump [5] and energy performance of domestic hot water systems [6].…”